The Blitz were marketed by CASSIN (Italia) and created by Martin Gutsche in 1987. Some more info: Patent DE 37 17 027. 8 December 1988. In the Cassin catalog 1991, the Blitz are numbered as #1, #2 and #3. Lighter than a SLCD of a similar size. The color anodized part must be placed upside, the non anodized part being downside.

I can't seem to find the original entry on the Nuts Museum website, though.

well has anyone actually used these? Im just reading what people think it would be like. Anyone actually use one of these?

I've had an old Cassin one for about 20 years. Weight is about like other gear in the range. One advantage is that it hangs nicely from the rack. As I've acquired bigger cams, I don't use it that often. It's reasonably stable, nothing like the wiggling of a large tricam but requires some practice to place it securely and not waste time.